It's been mentioned before but there was a perfect example at the weekend's 6N games of the difference. I've just got around to watching the games today!
England get over for a try, there might be a case for the player having dropped the ball. One commentator says "control Brian?" when shown the replay. Brian Moore then says "enough control for the officials" then they get on with the game. Same with the controversial French try where it looks very much like the player went beyond the dead ball line, "look at the scoreboard" then the subject was dropped. If those two incidents were rugby league then the rest of the game would have been dominated by the discussion about how the referee missed them or the ref's decision. It's done, it was 50/50 at worst so get on with the game.
Just think how much better watching games on telly would be if rugby league commentators adopted the rugby union attitude of the ref's decision being right when a decision could have gone either way.